SD Card Init Fail

I see a strange fail on a new Melzi board that we just connected to our Mendel. For all operations, the Melzi works ok, the prints are fine.

However, when I try to print with the SD card, I can't. The SD card init fails in the start-up, and the SD card fails to list all the files on the SD card.When I give the SD card init command, again I receive a SD card init fail message. Another strange thing that I notice is that when I send the SD card init command, my cooling fan noise increases for 2 seconds, and then goes back to normal - it almost seems that the 12V power line voltage gets a temporary spike.

What could be the reason and is there a simple solution?

SD cards have to support the SPI protocol, not all do.. most larger card don't (i've not found anything over 8MB that works, also not found many over class 4 that work)

SD cards have to be formatted in FAT32 format, not NTFS or anything else

Last I looked it only supported 8.3 file names, so at least till you get something working used 8.3 file names, then you can try longer names.